Colcom Foundation Says Bird Loss Reflects Broader Ecological Collapse
When the Colcom Foundation wants to make the consequences of population growth concrete and visible, it often turns to birds. North America has lost 2.9 billion birds since 1970, a decline from roughly ten billion individuals to approximately seven billion. That figure, the foundation argues, is not an isolated conservation failure but a signal of wider ecological dysfunction driven largely by habitat loss which is itself driven largely by human population growth.
The mechanism is not complicated. More people require more housing, more roads, more farmland, and more infrastructure. By 2020, the U.S. had converted an area equivalent to Montana, West Virginia, and South Carolina combined into paved or built surfaces. Agricultural uses consumed 52 percent of the national land base. Only 13 percent had any conservation protection. Birds and other wildlife are left with less and less habitat as human footprints expand.
A Pattern Across All Wildlife
Colcom Foundation’s work has facilitated proactive environmental advocacy and protection by groups, including the Western Pennsylvania Conservancy, WeConservePA, Westmoreland Land Trust, Protect PT, and Fair Shake Environmental Legal Services.
The decline is not limited to birds. Wild vertebrate animal populations have approximately halved during the same period that the human population doubled. Colcom Foundation also draws on data showing the dramatic shift in the relative weight of vertebrate land animals. Ten thousand years ago, wild animals made up 99 percent of that total biomass. Today, wild animals account for roughly 1 percent, with humans comprising 32 percent and livestock making up the remaining 67 percent. That transformation reflects a world remade to serve human and agricultural purposes at the expense of wild species.
Conservation Without Population Context
The Colcom Foundation’s argument is that mainstream conservation frequently addresses symptoms without confronting causes. Land protection efforts are valuable, the foundation acknowledges, but they face continuous pressure from a growing population that needs more space. Endangered species protections help, but the list of threatened species keeps growing: 1,300 were listed under the Endangered Species Act by 2020, and 23 were proposed for delisting due to extinction in 2021. Without slowing population growth, the foundation contends, every conservation gain is provisional. Colcom Foundation funds work on both fronts habitat protection and population stabilization as part of an integrated environmental strategy. Refer to this article for related information.
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